Family name Slabii (Slabii 
, Слабий 
) , all around the world, is a rare surname. The surname Slabii is characteristic of Eastern Europe, particularly Ukraine, where it is a rare surname, Belarus, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Slabii | Russia |
| Слабий | Belarus, Kazakhstan, Russia, Ukraine |